Magnetic Trachyte (red) overlying low magnetic basalt (green) with swelling clays. Brisbane SW Corridor Road Cut August,2012

Magnetic Trachyte (red) overlying low magnetic basalt (green) with swelling clays. Brisbane SW Corridor Road Cut August,2012

Magnetic Trachyte (red) overlying low magnetic basalt (green) with swelling clays. Brisbane SW Corridor Road Cut
August,2012

//]]>